Positioning device

Abstract

The invention discloses a positioning device and relates to the technical field of equipment.The positioning device comprises a supporting assembly and an abutting piece, the supporting assembly comprises a supporting base and a plurality of supporting pieces, the supporting base is provided with a first side and a second side in the first direction, and the supporting pieces extend in the first direction; the supporting pieces are arranged on the supporting base in a movable and adjustable mode in the first direction independently, each supporting piece is provided with a supporting end exposed out of the first side of the supporting base, and the supporting ends of the supporting pieces are used for abutting against one side of a product; the abutting piece is arranged on the first side of the supporting base and used for abutting against the other side of the product. The supporting ends of the multiple supporting pieces are exposed out of the first side of the supporting base and abut against one side face of the product, so that multiple contact points are formed on the surface of the product, the multiple contact points corresponding to the multiple supporting ends can form a net-shaped profiling face, the profiling face can adapt to the appearance characteristics of the product, and therefore universality is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning jigs, and in particular to a positioning device. Background Art

[0002] At present, there are many types of optical components in AR (Augmented Reality), VR (Virtual Reality), HUD (Head Up Display) and other equipment, and some of them have special-shaped curved surfaces. During the production process, the production line needs to be frequently switched according to different optical devices. In order to meet the line switching, many types of positioning fixtures need to be invested and a lot of man-hours are consumed for replacement, which also reduces the equipment utilization rate. Summary of the invention

[0003] The main purpose of the present invention is to provide a positioning device, which aims to achieve universal positioning of optical products and can be adapted to the rapid positioning of products with special-shaped curved surfaces.

[0004] To achieve the above object, the positioning device proposed by the present invention includes:

[0005] A support assembly, comprising a support seat and a plurality of support members, wherein the support seat has a first side and a second side in a first direction, the plurality of support members extend along the first direction, and each of the support members is independently and movably mounted on the support seat in the first direction, the plurality of support members have support ends disposed on the first side of the support seat, and the support ends of the plurality of support members are used to abut against one side of the product; and,

[0006] The supporting member is arranged on the first side of the supporting base and is used for supporting the other side of the product.

[0007] In one embodiment, a plurality of mounting holes are opened from the first side of the support seat, a plurality of the support members are sealed and slidably matched with the mounting holes, each of the support members has a driving end opposite to the supporting end, and the driving end of the support member can define a driving cavity with the mounting hole;

[0008] The positioning device further comprises a liquid medium delivery component, which is in communication with the plurality of driving chambers and is used for respectively providing liquid medium to the plurality of driving chambers to drive each of the supporting members to move and adjust in the first direction.

[0009] In one embodiment, the positioning device further includes a switch structure, and the switch structure is used to control each of the driving chambers to be connected or disconnected with the liquid medium delivery component.

[0010] In one embodiment, the liquid medium delivery assembly includes a sealing cover body covered on the second side of the support seat, the sealing cover body has a receiving cavity opened toward the support seat, the receiving cavity is connected to the ports of the second side of the support seat corresponding to the plurality of mounting holes, and the receiving cavity is filled with liquid medium;

[0011] The switch structure comprises a sealing plate arranged in the accommodating cavity and movably adjusted in a first direction, wherein the sealing plate has a sealing position abutting against the second side of the supporting seat and an opening position spaced apart from the supporting seat.

[0012] In one embodiment, the liquid medium conveying component also includes an adjustment structure, which includes at least one adjustment member, which is movably mounted on the sealing cover body, and the end of the adjustment member can extend into the accommodating cavity. The adjustment member can squeeze the liquid medium in the accommodating cavity during the movement, and allow the liquid medium to fill the driving cavity to drive the support member to move, and / or the adjustment member contacts the sealing plate during the movement to push the sealing plate to switch from the open position to the sealing position.

[0013] In one embodiment, the adjusting members are provided in plurality, and the plurality of adjusting members include a plurality of first adjusting members. Along the first direction, the plurality of first adjusting members are located on the side of the sealing plate facing away from the support seat, and the plurality of first adjusting members can contact the sealing plate during movement.

[0014] In one embodiment, the plurality of adjusting members further include a plurality of second adjusting members, and the plurality of second adjusting members are located on the peripheral side of the accommodating cavity.

[0015] In one embodiment, at least one communication hole communicating with the accommodating cavity is formed on the outer surface of the sealing cover body, and the communication hole has two hole sections that are sequentially connected along the length direction thereof;

[0016] The adjusting member is sealed and slidably matched with the mounting hole;

[0017] The adjustment structure further comprises at least one screw connection member, which is threadedly installed in another hole segment, and can drive the adjustment member to move during the rotation of the screw connection member.

[0018] In one embodiment, the end surface of the sealing cover body facing the support seat is provided with an annular groove arranged around the opening side of the accommodating cavity, and a sealing ring is arranged in the annular groove.

[0019] In one embodiment, a groove is formed in the middle of the first side of the support seat, and the groove is used for partially accommodating the product;

[0020] The plurality of support members are located on the peripheral side of the groove.

[0021] In the technical solution of the present invention, the first side of the support seat is used as an installation side for placing products, and the abutting member plays a function of pressing and positioning, and is used to press and fix the product on the first side of the support seat. Multiple support members are movable in a first direction, and each of the support members is independently adjusted. When the product is limited by the abutting member and the support seat, the support ends of multiple support members expose the first side of the support seat and abut against one side of the product, thereby forming multiple contact points on the surface of the product. Based on the different shapes of the product surface, the size of each support member protruding from the support seat may be different, and the multiple contact points corresponding to the multiple support ends can form a mesh-like profiling surface, which corresponds to the product's plane, or curved surface, or the combination of a plane and a curved surface, thereby achieving a good positioning effect. Based on this structural form, it can be used to quickly position a variety of products, and at the same time adapt to products with special-shaped curved surfaces, so that there is no need to replace the positioning device when the product production line is changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of an embodiment of a positioning device provided by the present invention;

[0024] Figure 2 for Figure 1 A three-dimensional exploded schematic diagram of the positioning device;

[0025] Figure 3 for Figure 1 Schematic diagram of the cross section along AA;

[0026] Figure 4 for Figure 1 Schematic diagram of the cross section along BB;

[0027] Figure 5 for Figure 1 Schematic diagram of the structure of the middle support seat.

[0028] Description of Figure Numbers:

[0029] 100. Positioning device; 1. Support assembly; 11. Support seat; 111. Mounting hole; 112. Groove; 12. Support member; 121. Support end; 122. Drive end; 2. Abutment member; 31. Sealing cover; 311. Accommodating cavity; 312. Annular groove; 32. Adjusting member; 321. First adjusting member; 322. Second adjusting member; 33. Screw-on member; 34. Sealing ring; 35. Spring; 4. Sealing plate.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] There are many types of optical components in AR (Augmented Reality), VR (Virtual Reality), HUD (Head Up Display) and other devices, and some of them have special-shaped curved surfaces. Specifically, taking lenses as an example, commonly used lenses have curved surfaces. Current positioning fixtures generally match lenses through contour design. However, since lenses of different specifications have different parameters such as size and concavity, each product needs to be matched separately. When replacing products during production, the matching positioning fixtures need to be replaced together, which is costly and consumes a lot of manpower and man-hours, and also reduces the utilization rate of equipment.

[0035] Please refer to Figure 1 to Figure 2 The positioning device 100 includes a support assembly 1 and a supporting member 2. The support assembly 1 includes a support seat 11 and a plurality of support members 12. The support seat 11 has a first side and a second side in a first direction. The plurality of support members 12 extend along the first direction, and each of the support members 12 is independently and independently mounted on the support seat 11 so as to be movable and adjustable in the first direction. The plurality of support members 12 have a supporting end 121 that is exposed from the first side of the support seat 11, and the supporting ends 121 of the plurality of support members 12 are used to abut against one side of the product; the supporting member 2 is disposed on the first side of the support seat 11 to abut against the other side of the product.

[0036] In the technical solution of the present invention, the first side of the support seat 11 serves as an installation side for placing products, and the abutting member 2 plays a function of abutting and positioning, and is used to press and fix the product on the first side of the support seat 11. Multiple support members 12 move in a first direction, and each of the support members 12 is independently adjusted. When the product is limited by the abutting member 2 and the support seat 11, the support ends 121 of the multiple support members 12 expose the first side of the support seat 11 and abut against one side of the product, thereby forming multiple contact points on the surface of the product. Based on the different shapes of the product surface, the size of each support member 12 protruding from the support seat 11 may be different. The multiple contact points corresponding to the multiple support ends 121 can form a mesh-like profiling surface, which corresponds to the product's plane, or curved surface, or the combination of a plane and a curved surface, thereby achieving a good positioning effect. Based on this structural form, a variety of products can be quickly positioned, and products with special-shaped curved surfaces can be adapted, so that the positioning device 100 does not need to be replaced when the product production line is changed.

[0037] It should be noted that, in some embodiments, the abutment 2 can be a structure such as a clamping claw, which can perform multi-point positioning on the local edge of the product, so as to cooperate with the support seat 11 to press the product, and the abutment 2 can directly serve as a driving component, that is, the abutment 2 applies force to the product, and the force is transmitted to the support member 12 in contact with the product, so that the support member 12 can adapt to the shape of the product under the action of the pressing force and adjust the movement in the up and down directions. At this time, during the product positioning process, the abutment 2 remains in cooperation with the support seat 11.

[0038] Considering that product processing often requires the product surface to be exposed to the outside, the supporting member 2 may block the product. Therefore, in some embodiments, the supporting member 2 is set as a detachable component. In the initial positioning of the product, the supporting member 2 cooperates with the support seat 11 to press and fix the product to ensure that the product will not move during the movement and tightening of the supporting member 12. After the multiple supporting members 12 complete the position positioning, the state of the multiple supporting members 12 is maintained, and the supporting member 2 is removed to expose the product to the outside. At this time, the product mainly relies on the contour adaptation of the multiple supporting members 12 to achieve positioning.

[0039] In order to realize that the plurality of support members 12 can be autonomously adjusted in position, an active driving member can be provided to drive each of the support members 12 to move, such as a cam-connecting rod structure. Considering the installation space, in this embodiment, please refer to Figures 3 to 5, a plurality of mounting holes 111 are opened from the first side of the support seat 11, and a plurality of the support members 12 are sealed and slidably matched with the mounting holes 111, and each of the support members 12 has a driving end 122 opposite to the supporting end 121, and the driving end 122 of the support member 12 can define a driving cavity with the mounting hole 111; taking the cooperation between a single mounting hole 111 and the support member 12 as an example, the support member 12 and the mounting hole 111 are movably sealed, that is, there is no gap between the support member 12 and the inner wall of the mounting hole 111, and when the support member 12 reveals the first side of the support seat 11, the corresponding supporting end 121 is exposed to the outside and abuts against the side of the product, while the driving end 122 forms a spacing with the port of the mounting hole 111 corresponding to the second side of the support seat 11, thereby forming a driving cavity, and the position of the driving cavity corresponding to the first side is blocked by the driving end 122, and the position corresponding to the second side is open. Based on this matching structure, the positioning device 100 further includes a liquid medium delivery component, which is in communication with the plurality of drive chambers and is used to provide liquid medium to the plurality of drive chambers respectively, so as to drive each of the support members 12 to move and adjust in the first direction. The liquid medium delivery component is in communication with the plurality of drive chambers, and when the liquid medium is provided to each drive chamber, the corresponding support member 12 is subjected to the liquid pressure and the holding action of the abutting member 2, so as to move and adjust in the first direction.

[0040] It should be understood that the plurality of support members 12 have two position states, one is a movable position that can be freely adjusted in the first direction, and the other is a contour position that is kept in close contact with the current product. In order to enable the plurality of support members 12 to remain in the contour position, the positioning device 100 also includes a switch structure, which is used to control the connection or disconnection of each of the drive chambers with the liquid medium conveying component. When the drive chamber is disconnected from the liquid medium conveying component, the drive chamber forms a closed chamber. At this time, the corresponding support member 12 will be fixed in the current position due to the pressure, and will not fall back even if the abutting member 2 is removed, that is, the pressure is released, so that it can maintain the position in the first direction. When the drive chamber is connected to the liquid medium conveying device, the corresponding support member 12 can be movably adjusted in the first direction.

[0041] The present invention does not limit the specific structural form of the switch structure, as long as the blocking and connecting functions of the drive cavity can be achieved. In some embodiments, the switch structure can be a control valve. In this embodiment, please refer to 3 and Figure 4The liquid medium conveying assembly includes a sealing cover body 31 which is covered on the second side of the support seat 11, and the sealing cover body 31 has a receiving cavity 311 which is open and arranged toward the support seat 11, and the receiving cavity 311 is connected to the ports of the second side of the support seat 11 corresponding to the plurality of mounting holes 111, and the receiving cavity 311 is filled with liquid medium; the switch structure includes a sealing plate 4 which is arranged in the receiving cavity 311 and is movable and adjustable in the first direction, and the sealing plate 4 has a sealing position which is in contact with the second side of the support seat 11, and an open position which is spaced from the support seat 11. The shape of the sealing cover body 31 is not limited, and it can be a groove-shaped structure which is open toward the first side, or a cover-like structure, and the sealing cover body 31 can be sealed and matched with the support seat 11, so that the receiving cavity 311 is connected with the plurality of driving cavities, and the connected space forms a sealed space. The sealing plate 4 serves as a switch structure. Initially, the sealing plate 4 is immersed in the liquid medium, that is, it is in the open position. When it is necessary to put the multiple support members 12 in the mode position, the sealing plate 4 is transferred from the open position to the sealing position, thereby simultaneously blocking the multiple drive cavities. Since the size of each support member 12 extending out of the corresponding mounting hole 111 is different, the volumes of the multiple drive cavities may be different. After the multiple drive cavities are simultaneously blocked by the sealing plate 4, each drive cavity forms an independent chamber, thereby keeping the position of each support member 12 fixed.

[0042] It should be noted that the sealing plate 4 is preferably made of a flexible material so as to form a seal naturally when in close contact with the second side of the support seat 11. A plurality of sealing members may also be provided on the sealing plate 4 corresponding to the plurality of mounting holes 111, and the sealing members extend into the mounting holes 111 to seal the drive cavity, and the present invention does not limit this.

[0043] Specifically, the end surface of the sealing cover 31 facing the support seat 11 is provided with an annular groove 312 arranged around the opening side of the accommodating cavity 311, and a sealing ring 34 is arranged in the annular groove 312. The sealing ring 34 is tightly pressed against the second side of the support seat 11 to form a sealing fit. During use, the sealing cover 31 and the support seat 11 are kept in fit.

[0044] The present invention does not limit the specific material of the liquid medium, and a reasonable selection needs to be made according to the fluid pressure and liquid density. In this embodiment, the liquid medium is oil.

[0045] Furthermore, the liquid medium conveying component also includes an adjustment structure, which includes at least one adjustment member 32, and the adjustment member 32 is movably mounted on the sealing cover body 31, and the end of the adjustment member 32 can extend into the accommodating cavity 311, and the adjustment member 32 can squeeze the liquid medium in the accommodating cavity 311 during the movement, and make the liquid medium fill the driving cavity to drive the support member 12 to move, and / or the adjustment member 32 contacts the sealing plate 4 during the movement to push the sealing plate 4 to switch from the open position to the sealing position. The adjusting member 32 can be driven to move, thereby changing the length thereof extending into the accommodating chamber 311. Since the accommodating chamber 311 is filled with a liquid medium and is sealed in communication with the driving chamber, when the length of the adjusting member 32 extending into the accommodating chamber 311 increases, the liquid medium is squeezed. By reasonably setting the size, number and position of the adjusting member 32, the adjusting member 32 can actively squeeze the liquid medium to drive the supporting member 12 to be displaced under pressure, and / or cause the sealing plate 4 to be displaced under pressure to perform position conversion.

[0046] Specifically, in one embodiment, please refer to Figure 4 , the adjusting member 32 is provided with a plurality of adjusting members 32, and the plurality of adjusting members 32 include a plurality of first adjusting members 321. Along the first direction, the plurality of first adjusting members 321 are located on the side of the sealing plate 4 facing away from the support seat 11, and the plurality of first adjusting members 321 can contact the sealing plate 4 during the movement. Initially, the plurality of first adjusting members 321 are not in contact with the sealing plate 4, and the sealing plate 4 is free in the liquid medium. As the first adjusting member 321 is driven to move in the direction pointing from the second side to the first side until it contacts the end face of the sealing plate 4, in the process of the first adjusting member 321 continuing to move, it not only squeezes the liquid medium, but also squeezes the sealing plate 4, thereby realizing the position adjustment of the sealing plate 4, that is, the sealing plate 4 is driven to switch between the open position and the sealing position through the movement of the first adjusting member 321.

[0047] In one embodiment, please refer to Figure 3 The plurality of adjusting members 32 further include a plurality of second adjusting members 322, and the plurality of second adjusting members 322 are located on the peripheral side of the accommodating cavity 311. At this time, the plurality of second adjusting members 322 mainly play the role of squeezing the liquid medium on the peripheral side of the sealing plate 4, so that the liquid medium is squeezed and enters the plurality of driving cavities, thereby driving the support member 12 to move and adjust.

[0048] In the technical solution of the present invention, a plurality of the first adjusting members 321 and a plurality of the second adjusting members 322 are provided at the same time, and the specific positioning process is as follows:

[0049] The product is positioned on the support seat 11 by the supporting member 2, and the plurality of second adjusting members 322 are adjusted first, so that the plurality of supporting members 12 can move to be tightly pressed against the side of the product under the action of the supporting member 2 and the liquid pressure, thereby reaching a square position, and the positions of the plurality of second adjusting members 322 are kept unchanged, and the plurality of first adjusting members 321 are driven to move and squeeze the liquid medium, so as to drive the sealing plate 4 to move, and squeeze the liquid between the sealing plate 4 and the support seat 11 to the peripheral side or the back side of the sealing plate 4, until the sealing plate 4 is driven to the sealing position. At this time, the contour position is maintained, the supporting member 2 is removed, the positioning is completed, and the corresponding processing steps can be carried out.

[0050] When the product needs to be replaced, the current product is removed and the driving force on the first adjusting member 321 and the second adjusting member 322 is released, so that the first adjusting member 321 and the second adjusting member 322 can be forced to move in the opposite direction. At this time, the sealing plate 4 and the support member 12 are back to the flexible adjustment state, and a new product can be placed and the above steps can be repeated for positioning.

[0051] It should be noted that the structures of the first adjusting member 321 and the second adjusting member 322 may be the same or different, and the quantities may be the same or different, and the present invention does not impose any limitation on this.

[0052] In order to realize the function of the adjusting member 32 to squeeze the liquid medium, in this embodiment, at least one connecting hole connected to the accommodating cavity 311 is opened on the outer surface of the sealing cover body 31, and the connecting hole has two hole sections that are sequentially connected along its length direction; the adjusting member 32 is sealed and slidably matched with the mounting hole 111; the adjusting structure also includes at least one screw connection 33, which is threadedly installed in another hole section, and can drive the adjusting member 32 to move during the rotation of the screw connection 33. That is, the operator can realize the extrusion drive and release of the driving force of the adjusting member 32 by tightening or selecting the screw connection 33. The structure is simple and the setting is flexible.

[0053] Specifically, for the second adjusting member 322, since its function is mainly to squeeze the liquid medium to drive the supporting member 12 to move, a spring 35 is arranged between the second adjusting member 322 and the nut of the screw-connecting member 33, and the spring 35 provides a pre-tightening force.

[0054] Moreover, in consideration of the structural avoidance of products with irregular curved surfaces, a groove 112 is provided in the middle of the first side of the support seat 11, and the groove 112 is used to partially accommodate the product; a plurality of the support members 12 are located around the groove 112. The plurality of the support members 12 form an annular structure, and the groove 112 plays a role of local avoidance.

[0055] The present invention does not limit the structural form of the abutting member 2. In this embodiment, please refer to Figure 2 The abutment 2 includes a plate body and a plurality of pillars, the plurality of pillars are located on the side of the plate body facing the support seat 11 and are distributed at the edge of the plate body so as to correspond to the peripheral side of the product, the plurality of pillars are used to contact the first side of the support seat 11, and the abutment 2 can be fixed to the support seat 11 by screws. The design of the pillars can adapt to the size of the product in the first direction.

[0056] It should be noted that in the technical solution of the present invention, the support seat 11, the support member 12, the sealing cover body 31 and the adjusting member 32 are all set to rigid materials, and rigid sliding sealing is achieved through reasonable size design. Such a setting can ensure good sliding fit while achieving sealing.

[0057] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A positioning device, characterized in that: include: A support assembly, comprising a support seat and a plurality of support members, wherein the support seat has a first side and a second side in a first direction, the plurality of support members extend along the first direction, and each of the support members is independently and movably mounted on the support seat in the first direction, the plurality of support members have support ends disposed on the first side of the support seat, and the support ends of the plurality of support members are used to abut against one side of the product; and, The supporting member is arranged on the first side of the supporting base and is used for supporting the other side of the product.

2. The positioning device according to claim 1, characterized in that A plurality of mounting holes are opened from the first side of the support seat, and a plurality of the support members are sealed and slidably matched with the mounting holes, and each of the support members has a driving end opposite to the supporting end, and the driving end of the support member can define a driving cavity with the mounting hole; The positioning device further comprises a liquid medium delivery component, which is in communication with the plurality of driving chambers and is used for respectively providing liquid medium to the plurality of driving chambers to drive each of the supporting members to move and adjust in the first direction.

3. The positioning device according to claim 2, characterized in that: The positioning device further comprises a switch structure, and the switch structure is used to control each of the driving chambers to be connected or disconnected with the liquid medium conveying assembly.

4. The positioning device according to claim 3, characterized in that: The liquid medium delivery assembly comprises a sealing cover body which is covered on the second side of the support seat, the sealing cover body has a receiving cavity which is open toward the support seat, the receiving cavity is connected to the ports of the second side of the support seat corresponding to the plurality of mounting holes, and the receiving cavity is filled with liquid medium; The switch structure comprises a sealing plate arranged in the accommodating cavity and movably adjusted in a first direction, wherein the sealing plate has a sealing position abutting against the second side of the supporting seat and an opening position spaced apart from the supporting seat.

5. The positioning device according to claim 4, characterized in that: The liquid medium conveying component also includes an adjustment structure, which includes at least one adjustment member, which is movably mounted on the sealing cover body, and the end of the adjustment member can extend into the accommodating cavity. The adjustment member can squeeze the liquid medium in the accommodating cavity during the movement, and allow the liquid medium to fill the driving cavity to drive the support member to move, and / or the adjustment member contacts the sealing plate during the movement to push the sealing plate to switch from the open position to the sealing position.

6. The positioning device according to claim 5, characterized in that: There are multiple adjusting members, and the multiple adjusting members include multiple first adjusting members. Along the first direction, the multiple first adjusting members are located on the side of the sealing plate facing away from the support seat, and the multiple first adjusting members can contact the sealing plate during movement.

7. The positioning device according to claim 5, characterized in that: The plurality of adjusting members further include a plurality of second adjusting members, and the plurality of second adjusting members are located on the peripheral side of the accommodating cavity.

8. The positioning device according to claim 5, characterized in that: At least one connecting hole connected to the accommodating cavity is formed on the outer surface of the sealing cover body, and the connecting hole has two hole sections connected in sequence along the length direction thereof; The adjusting member is sealed and slidably matched with the mounting hole; The adjustment structure further comprises at least one screw connection member, which is threadedly installed in another hole segment, and can drive the adjustment member to move during the rotation of the screw connection member.

9. The positioning device according to claim 4, characterized in that: The end surface of the sealing cover body facing the supporting seat is provided with an annular groove arranged around the opening side of the accommodating cavity, and a sealing ring is arranged in the annular groove.

10. The positioning device according to claim 1, characterized in that: A groove is formed in the middle of the first side of the support seat, and the groove is used for partially accommodating the product; The plurality of support members are located on the peripheral side of the groove.

Images